WO2023138111A1 - 安全型高频电刀手术器械 - Google Patents

安全型高频电刀手术器械 Download PDF

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Publication number
WO2023138111A1
WO2023138111A1 PCT/CN2022/124306 CN2022124306W WO2023138111A1 WO 2023138111 A1 WO2023138111 A1 WO 2023138111A1 CN 2022124306 W CN2022124306 W CN 2022124306W WO 2023138111 A1 WO2023138111 A1 WO 2023138111A1
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WO
WIPO (PCT)
Prior art keywords
jaw
locking
control
blade
wrench
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PCT/CN2022/124306
Other languages
English (en)
French (fr)
Inventor
王志平
袁小鹤
韦大纶
骆威
Original Assignee
以诺康医疗科技（苏州）有限公司
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Publication of WO2023138111A1 publication Critical patent/WO2023138111A1/zh

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
    • A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
    • A61B18/14—Probes or electrodes therefor
    • A61B18/1442—Probes having pivoting end effectors, e.g. forceps
    • A61B18/1445—Probes having pivoting end effectors, e.g. forceps at the distal end of a shaft, e.g. forceps or scissors at the end of a rigid rod
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
    • A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
    • A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
    • A61B18/14—Probes or electrodes therefor
    • A61B18/1442—Probes having pivoting end effectors, e.g. forceps
    • A61B2018/1452—Probes having pivoting end effectors, e.g. forceps including means for cutting

Definitions

  • the invention relates to the technical field of surgical instruments, in particular to a safe high-frequency electrosurgical surgical instrument.
  • the operating end of the high-frequency electrosurgical instrument has jaws and a blade, so that it has multiple functions of clamping tissue, coagulating tissue with high-frequency electric energy, and cutting tissue with a blade.
  • the interior of the high-frequency electrosurgical surgical instrument needs at least a jaw control mechanism to control the opening and closing of the jaws to clamp the tissue and a blade control mechanism to control the blade to stretch and cut the tissue.
  • the jaw control mechanism and the blade control mechanism are set independently to facilitate the step-by-step operation of the jaws and the blade.
  • the usual operation process of high-frequency electrosurgical surgical instruments is to first control the closure of the jaws to clamp the tissue, and then use the blade to cut. Such an operation process needs to ensure the closure of the jaws during the blade cutting process, that is, it needs to continuously control the jaw control mechanism.
  • the control end of the existing jaw control mechanism is mostly a handle, which has high requirements for the operator's grip stability.
  • Some existing high-frequency electrosurgical instruments are equipped with a locking mechanism to lock the jaw control mechanism, but the locking mechanism is likely to affect the operational flexibility of the jaw control mechanism, resulting in locking failure or reset failure after locking, resulting in unsmooth opening and closing of the jaws, resulting in inconvenient operation.
  • the blade control mechanism and the jaw control mechanism work independently, and in order to facilitate hand-held operation, the blade control mechanism and the jaw control mechanism are often arranged on the handle of the high-frequency electrosurgical surgical instrument.
  • the purpose of the present invention is to overcome the shortcomings of the prior art and provide a safe high-frequency electrosurgical surgical instrument and surgical instrument.
  • the safe high-frequency electrosurgical instrument includes a housing, a shaft member, a jaw assembly, a control wrench, a blade, and a control button.
  • the control wrench controls the opening and closing of the jaw assembly through the jaw control mechanism.
  • the control button drives the blade through the blade control mechanism to move and cut. The movement direction of the control wrench and the control button is consistent, and a locking mechanism is provided between the control wrench and the control button.
  • the undercut is arranged on the control button or on the trigger link of the blade control mechanism; in the first state, the jaw assembly is opened, the locking projection is engaged with the undercut, and the control button cannot be moved; in the second state, the jaw assembly is closed, the locking projection is separated from the undercut, the control button can move to drive the blade to cut, and after the control wrench retreats, the locking projection is engaged with the undercut again.
  • the shaft member extends forward from the front end of the housing and defines a longitudinal axis
  • the shaft member includes an inner sleeve and an outer sleeve
  • the jaw assembly is disposed at the front end of the shaft member
  • the blade is disposed inside the inner sleeve.
  • the jaw assembly includes a first jaw disposed at the front end of the inner sleeve and a second jaw disposed at the front end of the outer sleeve, the first jaw is hinged by the first pivot pin and the second jaw, the tail end sides of the first jaw and the second jaw are both provided with guide grooves, the front end of the inner sleeve is connected with the first jaw through the second pivot pin, and both ends of the second pivot pin are movably fixed in the guide groove, the guide groove is closed by a stopper, and the inner sleeve drives the first jaw and the second jaw through longitudinal movement The mouth opens and closes.
  • the jaw control mechanism includes a closing link, a push block and a jaw spring.
  • the push block is sleeved on the inner sleeve and abuts against the jaw spring sleeved at the tail end of the inner sleeve.
  • the control wrench is connected to the push block through the closing link, and drives the push block and the inner sleeve to move longitudinally synchronously.
  • the inner wall of the housing is provided with a push block guide groove defining the moving direction of the push block, and the push block is slidably engaged in the push block guide groove.
  • the tail end of the push block is abutted against a jaw return spring, and the jaw return spring is clamped in a limiting groove on the inner wall of the housing.
  • a wrench locking mechanism is provided between the bottom of the control wrench and the housing, the wrench locking mechanism includes a locking block located on the side of the control wrench and a locking bar located in the housing, the surface of the locking block is formed with a slot with a sliding guide surface, a limiting slot is provided in the housing, the locking bar moves elastically along the limiting slot, and its tail end is pivotally connected with the housing. Slot slide.
  • a Z-shaped/concave guide surface is formed on the surface of the card slot, and an inner bending part is formed in the middle part thereof.
  • the upper and lower sides of the side wall of the housing along the pivoting direction of the lock lever are abutted with elastic members.
  • two conductive rings are respectively arranged outside the outer casing, and the two conductive rings are respectively electrically connected to the first jaw and the second jaw through wires.
  • the two conductive rings slide against a conductive sheet respectively, and the two conductive sheets are fixed on the inner wall of the housing, and are respectively connected to a power supply through wires; a knob is provided at the front end of the housing, and the knob is fixedly connected to the outer casing and drives the outer casing to rotate synchronously.
  • the knife rod of the blade is passed through the inner sleeve, and the blade is movably locked in a movable groove between the first jaw and the second jaw.
  • the blade control mechanism includes a trigger link, a knife feed buckle and a blade return spring
  • the knife feed buckle is connected to the knife rod
  • the blade return spring is sleeved on the inner sleeve, and abuts against the knife feed buckle
  • the control button is connected to the knife feed buckle through the trigger link
  • a button guide groove is provided in the housing, the control button slides along the button guide groove and controls the knife feed buckle to move along the inner sleeve to drive the blade to move.
  • the control wrench is provided with a protruding post
  • the protruding post is located above the locking bump
  • the trigger link is provided with a recess matching the protruding post
  • the protruding post and the recess of the trigger link form an auxiliary retraction mechanism.
  • the locking structure is set so that the control wrench can restrict the control button.
  • the locking projection and the undercut are engaged so that the control button cannot be moved, that is, the blade cannot be stretched out;
  • the jaw assembly is closed, the locking projection moves backward and separates from the undercut, and the control button can move and drive the blade to protrude, thereby ensuring that the blade only moves and cuts after the tissue is clamped by the jaws, so as to ensure the safety of the operation and avoid triggering the blade to move and cut by mistake;
  • a wrench locking mechanism is set between the bottom of the control wrench and the housing to automatically lock the movement of the wrench, reducing the control pressure on the operator's hand and reducing the difficulty of operation. Due to the Z-shaped slot, the position of the control wrench relative to the housing can be locked or unlocked by repeated movement of the control wrench, and the operation is smooth;
  • Fig. 1 the schematic diagram of the embodiment of the present invention
  • Figure 1-1 A schematic diagram of another possible embodiment of the present invention.
  • Fig. 2 the schematic diagram of jaw assembly in the embodiment of the present invention
  • FIG. 3 Exploded schematic diagram of the shaft assembly in the embodiment of the present invention
  • Figure 4 A partial exploded schematic view of the shaft assembly in the embodiment of the present invention.
  • Figure 5 a partial structural schematic diagram of an embodiment of the present invention
  • Figure 6 a schematic diagram of the first state of the embodiment of the present invention.
  • Figure 7 A schematic diagram of switching from the first state to the second state according to the embodiment of the present invention.
  • Figure 8 A schematic diagram of the embodiment of the present invention switching from the first state to the second state
  • Figure 9 a schematic diagram of the second state of the embodiment of the present invention.
  • Figure 10 Internal schematic diagram of another embodiment of the present invention.
  • the present invention discloses a safe high-frequency electrosurgical instrument, including a housing 1, a shaft member, a jaw assembly, a control wrench 2, a blade 3, and a control button 4.
  • the control wrench 2 controls the opening and closing of the jaw assembly through a jaw control mechanism
  • the control button 4 drives the blade 3 to move and cut through a blade control mechanism.
  • the undercut 6 snapped by the protrusion 5 is formed, the locking protrusion 5 is arranged on the control wrench 2, the undercut 6 is arranged on the control button 4 or on the trigger link 402 of the blade control mechanism; in the first state, the jaw assembly is opened, the locking protrusion 5 is engaged with the undercut 6, and the control button 4 is immovable; in the second state, the jaw assembly is closed, the locking protrusion 5 is separated from the undercut 6, the control button 4 can move to drive the blade 3 to cut, and the control wrench After the hand 2 retreats, the locking projection 5 engages with the undercut 6 again.
  • a locking mechanism is provided between the control wrench 2 and the control button 4, so that the control wrench 2 plays a limiting role on the control button 4.
  • the locking projection 5 and the undercut 6 are snapped together, so that the control button 4 is movable, that is, the blade 3 cannot be stretched out; under the closed state of the jaw assembly, the locking projection 5 moves backward and is separated from the underside 6, so that the control button 4 has a movable space to move to drive the blade 3 for telescopic cutting.
  • the setting of the locking mechanism can ensure that the blade 3 Only after the jaws are closed and clamped to hold the tissue can the mobile cutting be performed, so as to ensure the safety of use and avoid false cutting caused by triggering the movement of the blade 3 by mistake.
  • the locking projection 5 is arranged on the extension of the control wrench 2 inside the housing 1 , and the undercut 6 is preferably arranged on the tail end edge of the control button 4 , and the locking projection 5 is engaged with the undercut 6 to form a locking function, which directly restricts the movement of the control button 4 .
  • the undercut 6 can also be arranged at other suitable positions on the control button 4 .
  • the locking protrusion 5 is not in contact with the control button 4 , and the undercut 6 is arranged at any position such as the side or side of the trigger link 402 that can ensure its engagement with the locking protrusion 5 .
  • the locking protrusion 5 engages with the undercut 6 to indirectly limit the movement of the control button 4 by limiting the movement of the trigger link 402 to form a locking function. Its working principle is: the trigger link 402 abuts against the locking projection 5 , and the torque of the contact pressure on the control wrench 2 is consistent with the retraction direction of the control wrench 2 , so as to achieve the purpose of stopping the control button 4 .
  • the shaft member extends forward from the front end of the housing 1 and defines a longitudinal axis
  • the shaft member includes an inner sleeve 701 and an outer sleeve 702
  • the jaw assembly is arranged at the front end of the shaft member
  • the blade 3 is arranged inside the inner sleeve 701.
  • the jaw assembly in this solution includes a first jaw 201 arranged at the front end of the inner sleeve 701 and a second jaw 202 arranged at the front end of the outer sleeve 702, the first jaw 201 is hinged by the first pivot pin 203 and the second jaw 202, the tail end sides of the first jaw 201 and the second jaw 202 are all provided with guide grooves 204, the front end of the inner sleeve 701 connects with the first jaw 2 through the second pivot pin 205 01 connection, and the two ends of the second shaft pin 205 are movably locked in the guide groove 204, and the inner sleeve 701 drives the first jaw 201 and the second jaw 202 to open and close by moving longitudinally.
  • the guide groove 204 is closed by a blocking piece 206, and the blocking piece 206 acts as a limiter for the first shaft pin 203 and the second shaft pin 205.
  • the first shaft pin 203 and the second shaft pin 205 may also form ends with diameters larger than their shafts to play a position-limiting role, or use other components with a position-limiting role.
  • the working principle of the jaw assembly is as follows: when the inner sleeve 701 moves forward, it will drive the second shaft pin 205 to move forward in the guide groove 204 synchronously.
  • the forward movement of the second shaft pin 205 will make the front end of the first jaw 201 upturned, so that the jaw assembly is opened; when the inner sleeve 701 moves backward, it will drive the second shaft pin 205 Synchronously move backward in the guide groove 204, so that the front end of the first jaw 201 moves down until it fits with the second jaw 202, so that the jaw assembly is closed.
  • the jaw control mechanism includes a closing link 207, a push block 208 and a jaw spring 209.
  • One end of the extension of the control wrench 2 located in the housing 1 is pivotally connected to the housing 1, and the other end is pivotally connected to the closing link 207.
  • the push block 208 is sleeved on the inner sleeve 701 and abuts against the jaw spring 209 sleeved on the tail end of the inner sleeve 701. 2 is connected to the push block 208 through the closing link 207, and drives the push block 208 and the inner sleeve 701 to move longitudinally synchronously.
  • the inner wall of the housing 1 is provided with a push block guide groove 210 that limits the moving direction of the push block 208, and the push block 208 is slidably engaged in the push block guide groove 210 to ensure that the moving direction of the push block 208 is consistent with the extension direction of the inner sleeve 701, improve the smoothness of movement of the inner sleeve 701, and avoid friction between it and other components.
  • the tail end of the push block 208 abuts against a jaw return spring 211 , and the jaw return spring 211 is clamped in a limiting groove 212 on the inner wall of the housing 1 .
  • the arrangement of the jaw return spring 211 increases the driving force for the reset of the push block 208 to ensure the reset of the push block 208 .
  • a wrench locking mechanism is provided between the bottom of the control wrench 2 and the housing 1 , and the wrench locking mechanism includes a locking block 213 located on the side of the control wrench 2 and a locking bar 214 located in the handle of the housing 1 .
  • the tail end of the locking rod 214 is pivotally connected to the housing 1, and elastic members 217 are symmetrically abutted on the upper and lower sides of the moving direction.
  • the elastic members 217 are preferably springs. In other embodiments, the elastic members 217 can also be made of other elastic structures.
  • the elastic member 217 is arranged symmetrically to ensure the force balance on the upper and lower sides of the locking bar 214 and to ensure that the locking bar 214 is kept at a constant position.
  • the locking bar 214 in this preferred embodiment is kept in a slightly downwardly inclined state, so that the front end of the locking slot 215 is always higher than the front end of the locking bar 214, so that when the locking bar 215 is close to the locking bar 214, the locking bar 214 can be driven to move along the outer contour of the locking slot 215.
  • the locking rod 214 slides and engages in the arc-shaped guide groove 218 arranged in the housing 1, and moves in an arc along the arc-shaped guide groove 218.
  • the arc-shaped guide groove 218 acts as a limit to the movement of the lock rod 214, further improving the movement stability of the lock rod 214.
  • a locking groove 215 is formed on the surface of the locking block 213 , a Z-shaped/concave guiding surface 216 is formed on the surface of the locking block 215 , and an inner bending portion 220 is formed in the middle thereof.
  • the front end of the locking bar 214 has a convex portion 219, the locking block 213 drives the convex portion 219 to slide along the guide surface 216 by moving relative to the locking bar 214, and the concave structure of the inner bending portion 220 plays a locking role on the convex portion 219 relative to the locking bar 214.
  • the protrusion 219 slides out of the inner bending portion 220 , the locking block 213 and the locking bar 214 are unlocked.
  • two conductive rings 703 are arranged outside the outer casing 702 , and the two conductive rings 703 are electrically connected to the first jaw 201 and the second jaw 202 respectively through wires.
  • the two conductive rings 703 slide against a conductive piece 704 respectively, and the two conductive pieces 704 are fixed on the inner wall of the housing 1, and are respectively connected to the power supply through wires; the front end of the housing 1 is provided with a knob 9, and the knob 9 is fixedly connected to the outer sleeve 702 and drives the outer sleeve 702 to rotate synchronously.
  • the conductive piece 704 is set to cooperate with the conductive ring 703, so that the outer sleeve 702 can freely rotate following the knob 9 without being restricted by the wire while ensuring current conduction.
  • the knife rod 301 of the blade 3 is installed in the inner sleeve 701, and the blade 3 is movably fixed in the movable groove 221 between the first jaw 201 and the second jaw 202, and the movable groove 221 limits the telescopic direction of the blade 3.
  • the blade control mechanism includes a trigger link 402 , a knife feed buckle 403 and a blade return spring 404 , the knife feed buckle 403 is connected to the knife rod 301 , and the knife rod 301 can rotate relative to the knife feed buckle 403 .
  • the blade return spring 404 is sleeved on the inner sleeve 701 and abuts against the feed buckle 403.
  • the control button 4 is connected to the feed buckle 403 through the trigger link 402.
  • the housing 1 is provided with a button guide groove 405.
  • the control button 4 slides along the button guide groove 405 and controls the knife feed buckle 403 to move along the inner sleeve 701 to drive the blade 3 to move.
  • the connection between the trigger link 402 and the knife feed buckle 403 is a waist-shaped hole.
  • the control wrench 2 in the present invention is provided with a boss 8, the boss 8 is located above the locking bump 5, and the trigger link 402 is provided with a recess that matches the boss 8, and the boss 8 and the recess of the trigger link 402 form an auxiliary retraction mechanism. 4 and back synchronously following the trigger link 402.
  • the protrusion 8 cooperates with the trigger link 402 to form an auxiliary retraction mechanism, which can cooperate with the jaw return spring 211 to play an auxiliary retraction function for the control button 4.
  • the protrusion 8 will drive the trigger link 402 to retreat synchronously, so as to achieve the purpose of driving the control button 4 to retreat synchronously.
  • the boss 8 may not be provided on the control wrench 2 , and the locking projection 5 is used to replace the function of the boss 8 , so that the locking projection 5 cooperates with the trigger link 402 to form an auxiliary retraction mechanism. Its working principle is: when the control wrench 2 retreats, the locking projection 5 will abut against the trigger link 402 to drive the trigger link 402 to retreat synchronously, so as to drive the control button 4 to retreat synchronously.

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Abstract

一种安全型高频电刀手术器械，包括壳体（1）、轴杆构件、钳口组件、控制扳手（2）、刀片（3）、控制按钮（4），控制扳手（2）通过钳口控制机构控制钳口组件的开合，控制按钮（4）通过刀片控制机构驱动刀片（3）进行移动切割，控制扳手（2）和控制按钮（4）的移动方向一致，且控制扳手（2）和控制按钮（4）之间设置有锁止机构，锁止机构由锁止凸块（5）和能够与锁止凸块（5）卡接的倒扣（6）构成，锁止凸块（5）设置于控制扳手（2）上，倒扣（6）设置于控制按钮（4）上或触发连杆（402）上；第一状态下，钳口组件张开，锁止凸块（5）和倒扣（6）卡接，控制按钮（4）不可移动；第二状态下，钳口组件闭合，锁止凸块（5）与倒扣（6）分离，控制按钮（4）可以移动驱动刀片（3）切割。设置锁止结构和回退机构来保证刀片（3）在钳口组件闭合时进行伸缩切割，保证操作的安全性。

Description

安全型高频电刀手术器械 技术领域
本发明涉及手术器械技术领域，具体地涉及一种安全型高频电刀手术器械。
背景技术
高频电刀手术器械的操作端具有钳口、刀片，使其具有夹持组织、高频电能凝结组织和使用刀片切断组织的多重功能。高频电刀手术器械的内部至少需要设置控制钳口进行开合来夹持组织的钳口控制机构和控制刀片进行伸缩切断组织的刀片控制机构，通常钳口控制机构和刀片控制机构是独立设置的，来方便钳口和刀片的分步操作。
高频电刀手术器械通常的操作过程是先控制钳口闭合来夹持组织，再使用刀片进行切割，这样的操作过程需要在刀片切割过程中保证钳口的闭合，即需要持续控制钳口控制机构，现有的钳口控制机构的控制端多为把手，这对操作人员的握持稳定性具有较高要求。现有的一些高频电刀手术器械会设置锁止机构来锁定钳口控制机构，但锁止机构容易对钳口控制机构的操作灵活性产生影响，产生锁止失败或者锁止后复位失败，导致钳口的开合不流畅，带来操作不便。
另一方面，由于刀片控制机构和钳口控制机构是独立工作的，并且为了方便手持操作，刀片控制机构和钳口控制机构往往都设置于高频电刀手术器械的手持柄部，在实际操作中，会因为刀片控制机构和钳口控制机构设置位置太靠近而导致误触，尤其是在控制钳口夹持组织之前误触发刀片，影响夹持效果的同时误切割组织，这给高频电刀手术器械的操作带来较高难度和极大不便，同时存在不小的安全隐患。
发明内容
本发明的目的是克服现有技术存在的不足，提供一种安全型高频电刀手术器械及手术器械。
本发明的目的通过以下技术方案来实现：
安全型高频电刀手术器械，包括壳体、轴杆构件、钳口组件、控制扳手、刀片、控制按钮，所述控制扳手通过钳口控制机构控制所述钳口组件的开合，所述控制按钮通过刀片控制机构驱动所述刀片进行移动切割，所述控制扳手和控制按钮的移动方向一致，且所述控制扳手和控制按钮之间设置有锁止机构，所述锁止机构由锁止凸块和能够与所述凸块卡接的倒扣构成，所述锁止凸块设置于所述控制扳手上，所述倒扣设置于所述控制按钮上或设置于所述刀片控制机构的触发连杆上；第一状态下，所述钳口组件张开，所述锁止凸块和倒扣卡接，所 述控制按钮不可移动；第二状态下，所述钳口组件闭合，所述锁止凸块与所述倒扣分离，所述控制按钮可以移动驱动所述刀片切割，所述控制扳手回退后，所述锁止凸块重新与所述倒扣卡接。
优选的，所述轴杆构件自所述壳体的前端向前延伸并限定纵向轴线，所述轴杆构件包括内套管和外套管，所述钳口组件设置于所述轴杆构件的前端，所述刀片设置于所述内套管的内部。
优选的，所述钳口组件包括设置于所述内套管前端的第一钳口和设置于所述外套管前端的第二钳口，所述第一钳口通过第一轴销和第二钳口铰接，所述第一钳口和第二钳口的尾端侧部均设置有导向槽，所述内套管的前端通过第二轴销与所述第一钳口连接，且所述第二轴销的两端活动卡设于所述导向槽内，所述导向槽由挡片封闭，所述内套管通过纵向移动驱动所述第一钳口和第二钳口进行开合。
优选的，所述钳口控制机构包括闭合连杆、推块和钳口弹簧，所述推块套设于所述内套管，并与套设于所述内套管尾端的所述钳口弹簧抵接，所述控制扳手通过所述闭合连杆与所述推块连接，并驱动所述推块、内套管同步做纵向移动。
优选的，所述壳体的内壁设置有限定所述推块移动方向的推块导向槽，所述推块滑动卡设于所述推块导向槽内。
优选的，所述推块的尾端抵接有钳口复位弹簧，所述钳口复位弹簧卡设于所述壳体的内壁上的限位槽内。
优选的，所述控制扳手的底部和所述壳体之间设置有扳手锁止机构，所述扳手锁止机构包括位于所述控制扳手的侧部的锁止块和位于所述壳体内的锁杆，所述锁止块的表面形成有具含滑动导向面的卡槽，所述壳体内设有限位槽，所述锁杆沿所述限位槽弹性移动，其尾端与所述壳体枢轴连接，所述锁杆前端具有凸部，使所述锁止块通过相对所述锁杆的移动驱动所述凸部沿卡槽滑动。
优选的，所述所述卡槽的表面形成有Z型/凹型的导向面，其中间部形成有内折弯部，当所述凸部沿所述导向面滑动至所述内折弯部时，所述锁止块和所述锁杆锁止；当所述凸部滑出所述内折弯部时，所述锁止块和所述锁杆解锁。
优选的，所述壳体的侧壁上沿所述锁杆枢转方向的上下两侧抵接有弹性件。
优选的，所述外套管外分别设置有两个导电环，两个所述导电环分别通过导线与所述第一钳口、第二钳口电性连接。
优选的，两个所述导电环分别滑动抵接有一导电片，两个所述导电片固设于所述壳 体的内壁上，且分别通过导线连通电源；所述壳体的前端设置有一旋钮，所述旋钮与所述外套管固接并带动所述外套管同步旋转。
优选的，所述刀片的刀杆穿设于所述内套管内，所述刀片活动卡设于所述第一钳口和第二钳口之间的活动槽内。
优选的，所述刀片控制机构包括触发连杆、进刀卡扣和刀片复位弹簧，所述进刀卡扣与所述刀杆连接，所述刀片复位弹簧套设于所述内套管上，并与所述进刀卡扣抵接，所述控制按钮通过所述触发连杆与所述进刀卡扣连接，所述壳体内设置有按钮导向槽，所述控制按钮沿所述按钮导向槽滑动并控制所述进刀卡扣沿所述内套管移动，来驱动所述刀片移动。
优选的，所述控制扳手上设置有凸柱，所述凸柱位于所述锁止凸块的上方，所述触发连杆上设置有与所述凸柱相匹配的凹部，所述凸柱和所述触发连杆的凹部形成辅助回退机构，当所述控制扳手回退时，所述凸柱与所述触发连杆上的凹部抵接并驱动所述触发连杆同步回退，所述控制按钮跟随所述触发连杆同步回退。
本发明的有益效果主要体现在：
1、设置锁止结构使得控制扳手对控制按钮起到限制作用，在钳口组件张开状态下，锁止凸块和倒扣卡接，使得控制按钮不可移动，即刀片无法伸出；在钳口组件闭合状态下，所述锁止凸块后移并与所述倒扣分离，所述控制按钮可以移动驱动刀片伸出，从而确保刀片仅在钳口夹持住组织后才进行移动切割，来保证操作的安全性，避免误触发刀片移动切割；
2、控制扳手的底部与壳体之间设置有扳手锁止机构来自动锁止扳手移动，减轻操作人员手部的控制压力，降低操作难度，由于Z字型的卡槽，使得反复移动控制扳手即可锁止或解锁控制扳手相对壳体的位置，操作流畅性高；
3、设置导电片和导电环配合，在保证电流传导的同时，使得外套管可以自由转动；
4、设置凸柱与触发连杆配合，形成辅助回退机构，来配合钳口复位弹簧对控制按钮起到辅助回退功能，当控制扳手回退时，凸柱会带动触发连杆同步回退，从而带动控制按钮同步回退。
附图说明
下面结合附图对本发明技术方案作进一步说明：
图1：本发明实施例的示意图；
图1-1：本发明另一可行实施例的示意图；
图2：本发明实施例中钳口组件的示意图；
图3：本发明实施例中轴杆组件的爆炸示意图；
图4：本发明实施例中轴杆组件的部分爆炸示意图；
图5：本发明实施例的部分结构示意图；
图6：本发明实施例的第一状态下的示意图；
图7：本发明实施例由第一状态向第二状态切换的示意图；
图8：本发明实施例由第一状态向第二状态切换的示意图；
图9：本发明实施例的第二状态下的示意图；
图10：本发明另一实施例的内部示意图。
具体实施方式
以下将结合附图所示的具体实施方式对本发明进行详细描述。但这些实施方式并不限于本发明，本领域的普通技术人员根据这些实施方式所做出的结构、方法、或功能上的变换均包含在本发明的保护范围内。
在方案的描述中，需要说明的是，术语“中心”、“上”、“下”、“左”、“右”、“前”、“后”、“竖直”、“水平”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。此外，术语“第一”、“第二”、“第三”仅用于描述目的，而不能理解为指示或暗示相对重要性。并且，在方案的描述中，以操作人员为参照，靠近操作者的方向为近端，远离操作者的方向为远端。
如图1至图9所示，本发明揭示了安全型高频电刀手术器械，包括壳体1、轴杆构件、钳口组件、控制扳手2、刀片3、控制按钮4，所述控制扳手2通过钳口控制机构控制所述钳口组件的开合，所述控制按钮4通过刀片控制机构驱动所述刀片3进行移动切割，所述控制扳手2和控制按钮4的移动方向一致，且所述控制扳手2和控制按钮4之间设置有锁止机构，所述锁止机构由锁止凸块5和能够与所述凸块5卡接的倒扣6构成，所述锁止凸块5设置于所述控制扳手2上，所述倒扣6设置于所述控制按钮4上或设置于所述刀片控制机构的触发连杆402上；第一状态下，所述钳口组件张开，所述锁止凸块5和倒扣6卡接，所述控制按钮4不可移动；第二状态下，所述钳口组件闭合，所述锁止凸块5与所述倒扣6分离，所述控制按钮4可以移动驱动所述刀片3切割，所述控制扳手2回退后，所述锁止凸块5重新与所述倒扣6卡接。
本发明在所述控制扳手2和控制按钮4之间设置锁止机构，使得控制扳手2对控制按钮4起到限制作用，在钳口组件张开状态下，锁止凸块5和倒扣6卡接，使得控制按钮4可移动，即刀片3无法伸出；在钳口组件闭合状态下，所述锁止凸块5后移并与所述倒扣6 分离，从而使得所述控制按钮4具有可以移动的空间进行移动来驱动刀片3进行伸缩切割，所述锁止机构的设置可以确保所述刀片3仅在钳口闭合夹持住组织后才进行移动切割，从而来保证使用的安全性，避免误触发刀片3移动造成误切割情况。
具体的，如图6-9所示，所述锁止凸块5设置于所述控制扳手2位于所述壳体1内的延伸部上，所述倒扣6优选设置于所述控制按钮4的尾端边缘，所述锁止凸块5与所述倒扣6卡接形成锁止功能，直接限制所述控制按钮4的移动。在其他可行的实施例中，所述倒扣6也可以设置于所述控制按钮4上的其他合适位置。
如图10所示，的另一可行实施例中，所述锁止凸块5不与所述控制按钮4接触，所述倒扣6设置于所述触发连杆402的侧边或侧部等任意可保证其与所述锁止凸块5的卡接的位置。所述锁止凸块5与所述倒扣6卡接，通过限制所述触发连杆402的移动来间接限制所述控制按钮4移动，形成锁止功能。其工作原理为：所述触发连杆402与所述锁止凸块5抵接，其接触压力对控制扳手2的转矩与控制扳手2的回退方向一致，达到止动所述控制按钮4的目的。
具体的如图2所示，所述轴杆构件自所述壳体1的前端向前延伸并限定纵向轴线，所述轴杆构件包括内套管701和外套管702，所述钳口组件设置于所述轴杆构件的前端，所述刀片3设置于所述内套管701的内部。
如图4所示，本方案中的所述钳口组件包括设置于所述内套管701前端的第一钳口201和设置于所述外套管702前端的第二钳口202，所述第一钳口201通过第一轴销203和第二钳口202铰接，所述第一钳口201和第二钳口202的尾端侧部均设置有导向槽204，所述内套管701的前端通过第二轴销205与所述第一钳口201连接，且所述第二轴销205的两端活动卡设于所述导向槽204内，所述内套管701通过纵向移动驱动所述第一钳口201和第二钳口202进行开合。在本优选实施例中，所述导向槽204由挡片206封闭，所述挡片206对所述第一轴销203、第二轴销205起到限位作用，这样的结构设置使得所述第一轴销203、第二轴销205仅为柱形即可，方便制造和安装。在其他可行的实施例中，所述第一轴销203、第二轴销205也可以形成直径大于其杆身的端部，来起到限位作用，或者使用其他具有限位作用的部件。所述钳口组件的工作原理为：当所述内套管701前移时，会带动所述第二轴销205的同步在所述导向槽204内前移，由于所述第一钳口201通过第一轴销203和第二钳口202铰接，所述第二轴销205的前移会使得所述第一钳口201的前端上翘，使得所述钳口组件张开；当所述内套管701后移时，会带动所述第二轴销205的同步在所述导向槽204内后移，使得所述第一钳口201的前端下移直至与所述第二钳口202相贴合，使得所述 钳口组件闭合。
进一步的，如图6至图9所示，所述钳口控制机构包括闭合连杆207、推块208和钳口弹簧209，所述控制扳手2位于所述壳体1内的延伸部的一端与所述壳体1枢轴连接，其另一端与所述闭合连杆207枢轴连接，所述推块208套设于所述内套管701，并与套设于所述内套管701尾端的所述钳口弹簧209抵接，所述控制扳手2通过所述闭合连杆207与所述推块208连接，并驱动所述推块208、内套管701同步做纵向移动。
为了提高所述钳口控制机构运动的流畅性和稳定性，所述壳体1的内壁设置有限定所述推块208移动方向的推块导向槽210，所述推块208滑动卡设于所述推块导向槽210内，确保所述推块208的移动方向和所述内套管701的延伸方向一致，提高所述内套管701移动的流畅性，避免其与其他部件之间产生摩擦。
进一步的，所述推块208的尾端抵接有钳口复位弹簧211，所述钳口复位弹簧211卡设于所述壳体1的内壁上的限位槽212内。所述钳口复位弹簧211的设置加大了对所述推块208复位的推动力，确保所述推块208的复位。
如图6至图9所示，为了进一步提高所述控制扳手2操作的便捷，所述控制扳手2的底部和所述壳体1之间设置有扳手锁止机构，所述扳手锁止机构包括位于所述控制扳手2的侧部的锁止块213和位于所述壳体1的柄部内的锁杆214。所述锁杆214的尾端与所述壳体1枢轴连接，在其移动方向的上下两侧对称抵接有弹性件217，所述弹性件217优选为弹簧，在其他实施例中所述弹性件217也可由其他具有弹性的结构。所述弹性件217对称设置来保证所述锁杆214上下两侧受力平衡，保证所述锁杆214保持在恒定位置。本优选实施例中的所述锁杆214保持在稍微向下倾斜的状态，使得所述卡槽215的前端始终高于所述锁杆214的前端，使得所述卡槽215靠近所述锁杆214时可以驱动所述锁杆214沿所述卡槽215的外轮廓移动。同时所述锁杆214滑动卡设于设置于所述壳体1内的弧形导向槽218内，并沿所述弧形导向槽218做弧形移动，所述弧形导向槽218对所述锁杆214的移动起到限位作用，进一步提高了所述锁杆214的移动稳定性。
所述锁止块213的表面形成有卡槽215，所述卡槽215的表面形成有Z字型/凹型的导向面216，其中间部形成有内折弯部220。所述锁杆214的前端具有凸部219，所述锁止块213通过相对所述锁杆214的移动驱动所述凸部219沿所述导向面216滑动，所述内折弯部220相对所述锁杆214内凹的结构对所述凸部219起到锁止作用，当所述凸部219滑入所述导向面216的内折弯部220时，所述锁止块213和所述锁杆214锁止；当所述凸部219滑出所述内折弯部220时，所述锁止块213和所述锁杆214解锁。
如图5所示，所述外套管702外分别设置有两个导电环703，两个所述导电环703分别通过导线与所述第一钳口201、第二钳口202电性连接。
进一步的，两个所述导电环703分别滑动抵接有一导电片704，两个所述导电片704固设于所述壳体1的内壁上，且分别通过导线连通电源；所述壳体1的前端设置有一旋钮9，所述旋钮9与所述外套管702固接并带动所述外套管702同步旋转。设置所述导电片704和导电环703配合，在保证电流传导的同时，使得外套管702可以跟随所述旋钮9自由转动，而不受导线的限制。
如图2、图4所示，所述刀片3的刀杆301穿设于所述内套管701内，所述刀片3活动卡设于所述第一钳口201和第二钳口202之间的活动槽221内，所述活动槽221对所述刀片3的伸缩方向起到限定作用。
如图6至图9所示，所述刀片控制机构包括触发连杆402、进刀卡扣403和刀片复位弹簧404，所述进刀卡扣403与所述刀杆301连接，所述刀杆301可相对所述进刀卡扣403旋转。所述刀片复位弹簧404套设于所述内套管701上并与所述进刀卡扣403抵接，所述控制按钮4通过所述触发连杆402与所述进刀卡扣403连接，所述壳体1内设置有按钮导向槽405，所述控制按钮4沿所述按钮导向槽405滑动并控制所述进刀卡扣403沿所述内套管701移动，来驱动所述刀片3移动。为了提高所述触发连杆402和所述进刀卡扣403之间连接的灵活性，所述触发连杆402与所述进刀卡扣403连接处为一腰型孔。
如图6-9所示，本发明中的所述控制扳手2上设置有凸柱8，所述凸柱8位于所述锁止凸块5的上方，所述触发连杆402上设置有与所述凸柱8相匹配的凹部，所述凸柱8和所述触发连杆402的凹部形成辅助回退机构，当所述控制扳手2回退时，所述凸柱8与所述触发连杆402上的凹部抵接并驱动所述触发连杆402同步回退，所述控制按钮4跟随所述触发连杆402同步回退。所述凸柱8与触发连杆402配合，形成的辅助回退机构，可以配合所述钳口复位弹簧211对控制按钮4起到辅助回退功能，当所述钳口复位弹簧211推动所述控制扳手2回退时，所述凸柱8会带动所述触发连杆402同步回退，达到带动所述控制按钮4同步回退的目的。
在其他可行的实施例中，所述控制扳手2上也可以不设置所述凸柱8，使用所述锁止凸块5来替代所述凸柱8的功能，使得所述锁止凸块5与所述触发连杆402配合形成辅助回退机构。其工作原理为：在所述控制扳手2回退时，所述锁止凸块5会与所述触发连杆402抵接，来驱动所述触发连杆402的同步回退，达到带动所述控制按钮4同步回退的目的。
应当理解，虽然本说明书按照实施方式加以描述，但并非每个实施方式仅包含一个 独立的技术方案，说明书的这种叙述方式仅仅是为清楚起见，本领域技术人员应当将说明书作为一个整体，各实施方式中的技术方案也可以经适当组合，形成本领域技术人员可以理解的其他实施方式。
上文所列出的一系列的详细说明仅仅是针对本发明的可行性实施方式的具体说明，它们并非用以限制本发明的保护范围，凡未脱离本发明技艺精神所作的等效实施方式或变更均应包含在本发明的保护范围之内。

Claims (15)

  1. 安全型高频电刀手术器械，其特征在于：包括壳体(1)、轴杆构件、钳口组件、控制扳手(2)、刀片(3)、控制按钮(4)，所述控制扳手(2)通过钳口控制机构控制所述钳口组件的开合，所述控制按钮(4)通过刀片控制机构驱动所述刀片(3)进行移动切割，所述控制扳手(2)和控制按钮(4)的移动方向一致，且所述控制扳手(2)和控制按钮(4)之间设置有锁止机构，所述锁止机构由锁止凸块(5)和能够与所述凸块(5)卡接的倒扣(6)构成，所述锁止凸块(5)设置于所述控制扳手(2)上，所述倒扣(6)设置于所述控制按钮(4)上或设置于所述刀片控制机构的触发连杆(402)上；第一状态下，所述钳口组件张开，所述锁止凸块(5)和倒扣(6)卡接，所述控制按钮(4)不可移动；第二状态下，所述钳口组件闭合，所述锁止凸块(5)与所述倒扣(6)分离，所述控制按钮(4)可以移动驱动所述刀片(3)切割，所述控制扳手(2)回退后，所述锁止凸块(5)重新与所述倒扣(6)卡接。
  2. 根据权利要求1所述的安全型高频电刀手术器械，其特征在于：所述轴杆构件自所述壳体(1)的前端向前延伸并限定纵向轴线，所述轴杆构件包括内套管(701)和外套管(702)，所述钳口组件设置于所述轴杆构件的前端，所述刀片(3)设置于所述内套管(701)的内部。
  3. 根据权利要求2所述的安全型高频电刀手术器械，其特征在于：所述钳口组件包括设置于所述内套管(701)前端的第一钳口(201)和设置于所述外套管(702)前端的第二钳口(202)，所述第一钳口(201)通过第一轴销(203)和第二钳口(202)铰接，所述第一钳口(201)和第二钳口(202)的尾端侧部均设置有导向槽(204)，所述内套管(701)的前端通过第二轴销(205)与所述第一钳口(201)连接，且所述第二轴销(205)的两端活动卡设于所述导向槽(204)内，所述导向槽(204)由挡片(206)封闭，所述内套管(701)通过纵向移动驱动所述第一钳口(201)和第二钳口(202)进行开合。
  4. 根据权利要求3所述的安全型高频电刀手术器械，其特征在于：所述钳口控制机构包括闭合连杆(207)、推块(208)和钳口弹簧(209)，所述推块(208)套设于所述内套管(701)，并与套设于所述内套管(701)尾端的所述钳口弹簧(209)抵接，所述控制扳手(2)通过所述闭合连杆(207)与所述推块(208)连接，并驱动所述推块(208)、内套管(701)同步做纵向移动。
  5. 根据权利要求4所述的安全型高频电刀手术器械，其特征在于：所述壳体(1)的内壁设置有限定所述推块(208)移动方向的推块导向槽(210)，所述推块(208)滑动卡设于所述推块导向槽(210)内。
  6. 根据权利要求5所述的安全型高频电刀手术器械，其特征在于：所述推块(208)的尾端抵接有钳口复位弹簧(211)，所述钳口复位弹簧(211)卡设于所述壳体(1)的内壁上的限位槽(212)内。
  7. 根据权利要求1所述的安全型高频电刀手术器械，其特征在于：所述控制扳手(2)的底部和所述壳体(1)之间设置有扳手锁止机构，所述扳手锁止机构包括位于所述控制扳手(2)的侧部的锁止块(213)和位于所述壳体(1)内的锁杆(214)，所述锁止块(213)的表面形成有具含滑动导向面的卡槽(215)，所述壳体(1)内设有限位槽(218)，所述锁杆(214)沿所述限位槽(218)弹性移动，其尾端与所述壳体(1)枢轴连接，所述锁杆(214)前端具有凸部(219)，使所述锁止块(213)通过相对所述锁杆(214)的移动驱动所述凸部(219)沿卡槽(215)滑动。
  8. 根据权利要求7所述的安全型高频电刀手术器械，其特征在于：所述卡槽(215)的表面形成有Z型/凹型的导向面(216)，其中间部形成有内折弯部(220)，当所述凸部(219)沿所述导向面(216)滑动至所述内折弯部(220)时，所述锁止块(213)和所述锁杆(214)锁止；当所述凸部(219)滑出所述内折弯部(220)时，所述锁止块(213)和所述锁杆(214)解锁。
  9. 根据权利要求8所述的安全型高频电刀手术器械，其特征在于：所述壳体(1)的侧壁上沿所述锁杆(214)枢转方向的上下两侧抵接有弹性件(217)。
  10. 根据权利要求3所述的安全型高频电刀手术器械，其特征在于：所述外套管(702)外分别设置有两个导电环(703)，两个所述导电环(703)分别通过导线与所述第一钳口(201)、第二钳口(202)电性连接。
  11. 根据权利要求10所述的安全型高频电刀手术器械，其特征在于：两个所述导电环(703)分别滑动抵接有一导电片(704)，两个所述导电片(704)固设于所述壳体(1)的内壁上，且分别通过导线连通电源；所述壳体(1)的前端设置有一旋钮(9)，所述旋钮(9)与所述外套管(702)固接并带动所述外套管(702)同步旋转。
  12. 根据权利要求4所述的安全型高频电刀手术器械，其特征在于：所述刀片(3)的刀杆(301)穿设于所述内套管(701)内，所述刀片(3)活动卡设于所述第一钳口(201)和第二钳口(202)之间的活动槽(221)内。
  13. 根据权利要求12所述的安全型高频电刀手术器械，其特征在于：所述刀片控制机构还包括进刀卡扣(403)和刀片复位弹簧(404)，所述进刀卡扣(403)与所述刀杆(301)连接，所述刀片复位弹簧(404)套设于所述内套管(701)上，并与所述进刀卡扣(403)抵 接，所述控制按钮(4)通过所述触发连杆(402)与所述进刀卡扣(403)连接，所述壳体(1)内设置有按钮导向槽(405)，所述控制按钮(4)沿所述按钮导向槽(405)滑动并控制所述进刀卡扣(403)沿所述内套管(701)移动，来驱动所述刀片(3)移动。
  14. 根据权利要求1所述的安全型高频电刀手术器械，其特征在于：所述控制扳手(2)上设置有凸柱(8)，所述凸柱(8)位于所述锁止凸块(5)的上方，所述触发连杆(402)上设置有与所述凸柱(8)相匹配的凹部，所述凸柱(8)和所述触发连杆(402)的凹部形成辅助回退机构，当所述控制扳手(2)回退时，所述凸柱(8)与所述触发连杆(402)上的凹部抵接并驱动所述触发连杆(402)同步回退，所述控制按钮(4)跟随所述触发连杆(402)同步回退。
  15. 根据权利要求1-14任一所述的安全型高频电刀手术器械，其特征在于：所述控制扳手(2)为U型开放式结构或封闭环形结构。
PCT/CN2022/124306 2022-01-24 2022-10-10 安全型高频电刀手术器械 WO2023138111A1 (zh)

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